Drawing-board.



PATBNTED JUNE 25, 1907. G. S. MANUEL. DRAWING BOARD. APPLIOATION FILEDs211124. 190e.

GEORGE S. MANUEL, OF TURLOCK, CALIFORNIA.

DRAWING-BARD.

Specication of Letters Patent.

Patented June 25, 1907.

Application filed September 24, 1906. Serial No. 336,034.

To all whom t may concern:

Be it known that I, GEORGE S. MANUEL, a citizen of the United States,residing at Turlock, in the county of Stanislaus and State ofCalifornia, have invented certain new and useful Improvements inDrawing-Boards and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the artto which it appertains to make and use thesame. V

This invention relates to drawing boards, and has for an obj ect toprovide a board embodying improved means for compensating for expansionand contraction.

A further object of the invention is to provide a drawing board composedof a plurality of strips rigidly secured side by side and with improvedmeans binding their ends whereby a lateral expansion and contraction ofthe strips is permitted.

A further object of the invention is to provide in a drawing board abody composed of a plurality of plane strips rigidly connected at theiradjacent edges and provided with tongue and groove connection with endcleats and with improved means permitting a lateral movement of the bodyportion relative to the end cleats.

With these and other objects in view, the invention comprises certainother novel constructions, combinations and arrangements of parts, aswill be hereinafter fully described and claimed.

In the drawings Figure 1 is a view in plan of the improved drawing boardwith portions broken away to more clearly illustrate the structure. Eig.2 is a view of the improved drawing board in longitudinal edgeelevation. Fig. 3 is a view of the improved drawing board in transverseedge elevation.

Like characters of reference designate corresponding parts throughoutthe several views.

The improved drawing board forming the subject-matter of thisapplication comprises a plurality of plane strips of board or likematerial 10 rigidly secured together at their adjacent edgesby anyapproved means as the dowels 11. The associated strips 10 are providedalong their ends with tongue and groove connection here shown as thetongues 12 upon which tongue are disposed end cleats 13 having a grooveiitting upon the tongue 12 of the boards. At similar ends the cleats 135 5 are rigidly secured to one of the strips 10 as by the use of gluerepresented at 14 or screws 15, or both such means whereby the cleats 13are rigidly secured to said strip at or near one outer edge. The strip10 upon the opposite 6o side is provided with an opening 15 extendinglongitudinally therethrough and wider in the direction of the width ofthe board than in a direction laterally of the board, whereby a slot isformed through which is inserted a rod or bolt 16 having its oppositeends extend through the end cleats 13 and provided with heads 17preferably counter-sunk as within the recesses 18.

It will be seen that the cleats 13 secured at 7o one end only to oneside of the body of the drawing board permit the board to contract andexpand u nder the action of the climate, or for other reasons, and thatsuch expansion and contraction is permitted by the groove 15 withinwhich is disposed the rod 16 and that the width of the body of the boardmay vary relative to the length of the cleats 13.

What I claim is 1. In a drawing board, a plane body pro- 8o vided withan elongated opening extending longitudinally through one edge, cleatsdisposed transversely across the ends of the body and secured thereto atthe edge opposite the elongated opening, and a bar extend- 8 5 ingthrough the elongated opening and connecting the cleats.

2. A drawing board, comprising a plurality of plane strips rigidlyconnected together at their adjacent edges and with one of said 9ostrips provided with an elongated opening extending longitudinallytherethrough adj acent one edge, cleats extending transversely of thebody, and rigidly connected with the strip opposite the strip providedwith an elongated opening, and a bar extending through the elongatedopening and connecting the cleats.

3. A drawing board comprising a body composed of a plurality of planestrips rig- 10o idly connected together at their adjacent edges, and oneof said strips provided with an elongated opening extendinglongitudinally therethrough adjacent one edge, cleats extending alongthe .end ofthe associated strips In testimony whereof I affix mysignature and associated therewith by tongue and in presence ofWitnesses.

groove connectionI means rigidly securing GEORGE S. MANUEL,

the Cleats to the strip opposite the strip pro- Witnesses:

vided With the elongated opening, and a bar J. K. MANUEL,

extending through the elongated opening JOHN T. LUYsTER,

and connecting the ends ofthe cleats. l H. S. CRANE.

